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LA1805 View Datasheet(PDF) - SANYO -> Panasonic

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LA1805 Datasheet PDF : 13 Pages
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Test Circuit
LA1805
Polystyrene film capacitor
Differs from the application circuit
where a front end is used.
(See Sample Application Circuit
on page 10.)
How to use the LA1805
Unit (resistance : , capacitance : F)
1. Forced monaural mode.
Figures 1 and 2 show how to cause the forced monaural mode to be entered.
(1) Connect pin 14 to VCC through a resistor of 100k. (Turn ON the SW1 in Figure 1.)
(2) Connect pin 15 to GND through a resistor of 47k. (Turn ON the SW2 in Figure 2.)
Figure 1 Forced Monaural Mode Setting Method Figure 2 Forced Monaural Mode Setting Method
Either above-mentioned (1) or (2) causes the forced
monaural mode to be entered. In this case, the VCO
does not stop operating. If the resistance of R1 and
R2 are decreased, internal bias will vary when the S1
or S2 is turned ON. This data is shown in Figure 3.
Forced Monaural Mode Setting Resistance Free-
Running Frequency
Figure 3
No.2887-3/13
 

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